Coherent detection schemes for subcarrier wave continuous variable quantum key distribution
arXiv:2006.16543 · doi:10.1364/JOSAB.424516
Abstract
We examine different methods to implement coherent detection in the subcarrier wave quantum key distribution (SCW QKD) systems. For classical wavefields, we present the models describing homodyne-type and heterodyne-type coherent detection schemes needed to extract information from the quadrature phase-coded multimode signals used in SCW QKD. Practical feasibility of the proposed schemes is corroborated by the experiments.
arXiv comment14 pages, 10 figures
References in corpus (16)
- Quantum key distribution using gaussian-modulated coherent states
- Long-Distance Continuous-Variable Quantum Key Distribution over 202.81 km of Fiber
- Continuous-variable quantum key distribution protocols with a non-Gaussian modulation
- Quantum cryptography using balanced homodyne detection
- Asymptotic security analysis of discrete-modulated continuous-variable quantum key distribution
- A balanced homodyne detector for high-rate Gaussian-modulated coherent-state quantum key distribution
- Asymptotic security of continuous-variable quantum key distribution with a discrete modulation
- Efficiency of coherent state quantum cryptography in the presence of loss: Influence of realistic error correction
- A security proof of continuous-variable QKD using three coherent states
- Security of subcarrier wave quantum key distribution against the collective beam-splitting attack
- Multi-channel parallel continuous variable quantum key distribution with Gaussian modulation
- Quantum Model for Electro-Optical Phase Modulation
- Quantum key distribution with phase-encoded coherent states: Asymptotic security analysis in thermal-loss channels
- Algebraic approach to electro-optic modulation of light: Exactly solvable multimode quantum model
- Subcarrier wave continuous variable quantum key distribution with discrete modulation: mathematical model and finite-key analysis
- Homodyne-like detection for state-discrimination in the presence of phase noise